Exhibit 4.1 "THE WARRANTS REPRESENTED BY THIS UNIT PURCHASE WARRANT AGREEMENT AND THE OTHER SECURITIES ISSUABLE UPON EXERCISE THEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, PURSUANT TO A REGISTRATION STATEMENT FILED...Unit Purchase Warrant Agreement • August 14th, 1997 • Procept Inc • Biological products, (no disgnostic substances) • New York
